== sanity test 413k: QoS mkdir exclude prefixes ========== 01:12:29 (1787375549)
lmv.lustre-clilmv-ffff94aa48c80800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94aa48c80800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94aa48c80800.qos_exclude_prefixes=_temporary